That message became her campaign's most-retweeted Tweet ever, according to her team. It spawned the hashtag #DeleteYourAccount which trended Thursday afternoon. But the trolling didn't stop there. Trump and the GOP fired back, alluding to her private email server controversy.

How long did it take your staff of 823 people to think that up--and where are your 33,000 emails that you deleted? https://t.co/gECLNtQizQ